.modal-backdrop.am-fade {
    opacity: .5;
    transition: opacity .15s linear;
&.ng-enter {
     opacity: 0;
&.ng-enter-active {
     opacity: .5;
 }
}
&.ng-leave {
     opacity: .5;
&.ng-leave-active {
     opacity: 0;
 }
}
}

